Albert has 12 more 10-cent coins than 20-cent coins. The total value of all his coins is $5.40. Find
the total number of coins he has.

thank you​

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450

use formula for the circle a=3.14

step-by-step explanation:

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076